Researchers at MIT have unveiled a groundbreaking method to produce sustainable green hydrogen using recycled aluminium and seawater. Unlike conventional methods like steam methane reforming, which emit significant CO₂, this innovative approach harnesses the aluminium-water reaction to generate hydrogen, heat, and aluminium oxyhydroxide. MIT overcame the challenge of the oxide layer on aluminium by coating recycled pellets with a gallium-indium alloy. The process emits only 1.45 kg CO₂ per kg of hydrogen, nearing the cleanest electrolysis systems. It also produces boehmite, enhancing profitability. A prototype hydrogen reactor was showcased, highlighting the safety and logistical advantages of solid aluminium pellet transportation. This method, drawing on seawater and aluminium, shows promise for off-grid applications. By using recycled aluminium and innovative techniques, the research team envisions a scalable, low-emission pathway for hydrogen production. The system's potential for transportation, remote energy, and marine uses could revolutionize clean energy deployment in areas with limited infrastructure.